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Diffstat (limited to 'spec/socks-extensions.md')
| -rw-r--r-- | spec/socks-extensions.md | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/spec/socks-extensions.md b/spec/socks-extensions.md index 011c119..6486215 100644 --- a/spec/socks-extensions.md +++ b/spec/socks-extensions.md @@ -13,6 +13,7 @@ Table of Contents ``` <a id="socks-extensions.txt-1"></a> + # Overview The SOCKS protocol provides a generic interface for TCP proxies. Client @@ -32,14 +33,17 @@ SOCKS4 to allow addressing by hostname; SOCKS5 supports IPv4, IPv6, and hostnames. <a id="socks-extensions.txt-1.1"></a> + ## Extent of support Tor supports the SOCKS4, SOCKS4A, and SOCKS5 standards, except as follows: BOTH: + - The BIND command is not supported. SOCKS4,4A: + - SOCKS4 usernames are used to implement stream isolation. ```text @@ -67,6 +71,7 @@ SOCKS4,4A: manpage.) <a id="socks-extensions.txt-2"></a> + # Name lookup As an extension to SOCKS4A and SOCKS5, Tor implements a new command value, @@ -86,7 +91,8 @@ address" portion of the reply. (This command was not supported before Tor 0.1.2.2-alpha.) <a id="socks-extensions.txt-3"></a> -# Other command extensions. + +# Other command extensions Tor 0.1.2.4-alpha added a new command value: "CONNECT_DIR" [F2]. In this case, Tor will open an encrypted direct TCP connection to the @@ -98,6 +104,7 @@ The F2 command value was removed in Tor 0.2.0.10-alpha in favor of a new use_begindir flag in edge_connection_t. <a id="socks-extensions.txt-4"></a> + # HTTP-resistance Tor checks the first byte of each SOCKS request to see whether it looks @@ -107,6 +114,7 @@ misconfigured. This is helpful for the many users who mistakenly try to use Tor as an HTTP proxy instead of a SOCKS proxy. <a id="socks-extensions.txt-5"></a> + # Optimistic data Tor allows SOCKS clients to send connection data before Tor has sent a @@ -119,6 +127,7 @@ their connection has succeeded or failed _after_ they have sent the data. <a id="socks-extensions.txt-6"></a> + # Extended error codes We define a set of additional extension error codes that can be returned @@ -129,7 +138,7 @@ connections. via the ExtendedErrors flag. In Arti, these error codes are enabled whenever onion services are.) -* X'F0' Onion Service Descriptor Can Not be Found +- X'F0' Onion Service Descriptor Can Not be Found ```text The requested onion service descriptor can't be found on the hashring @@ -185,4 +194,3 @@ References: [3] SOCKS5: RFC 1928 https://www.ietf.org/rfc/rfc1928.txt [4] RFC 1929: https://www.ietf.org/rfc/rfc1929.txt ``` - |